WxDC

A wxDC is a "device context" onto which graphics and text can be drawn.

List of DC class

• wxScreenDC is used to draw anywhere on the screen.
• wxWindowDC is used if we want to paint on the whole window (Windows only). This includes window decorations.
• wxClientDC is used to draw on the client area of a window. The client area is the area of a window without its decorations (title and border).
• wxPaintDC is used to draw on the client area as well.
• wxMemoryDC is used to draw graphics on the bitmap.
• wxPostScriptDC is used to write to PostScript files on any platform.
• wxPrinterDC is used to access a printer (Windows only).

wxPen & wxBrush Styles

wxPaintDC vs wxClientDC

But there is one difference between the wxPaintDC and the wxClientDC.

• wxPaintDC should be used only from a wxPaintEvent.
• wxClientDC should not be used from a wxPaintEvent.

Favorite site

• wxDC Class Reference
• Device Contexts in wxWidgets
• wxPytWiki: DoubleBufferedDrawing ¹

References